Download - Heinrich A. Metzen 1 , Igor Dormuth 2 1 Datakustik GmbH, Gewerbering 5, D-86926 Greifenberg
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Heinrich A. MetzenHeinrich A. Metzen11, Igor Dormuth, Igor Dormuth22
11Datakustik GmbH, Gewerbering 5, D-86926 GreifenbergDatakustik GmbH, Gewerbering 5, D-86926 Greifenberg22ACCON GmbH, Gewerbering 5, D-86926 GreifenbergACCON GmbH, Gewerbering 5, D-86926 Greifenberg
Noise Mapping San Juan - Puerto RicoNoise Mapping San Juan - Puerto Rico
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Generation of a Digital Town ModelGeneration of a Digital Town Model
buildings
terrain
sources(roads)
Digital Town Model
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Input Data - Road NetworkInput Data - Road Network
roadsroadscoast linecoast linemunicipal bordermunicipal border
total road length: 280 kmtotal road length: 280 km
distribution of traffic AADT:distribution of traffic AADT:
AADT classe (veh/day) road lengthfrom to (km)
1000 2.81000 5000 21.05000 10000 5.710000 20000 70.420000 50000 113.650000 66.9
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Distribution of Traffic LoadDistribution of Traffic Load
coast linecoast linemunicipal bordermunicipal border
road sections coloured based road sections coloured based on their AADT-dataon their AADT-data
legend:legend:
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Input Data - BuildingsInput Data - Buildings
buildingsbuildingscoast linecoast linemunicipal bordermunicipal border
total number of buildings within San total number of buildings within San Juan municipal border: 111562Juan municipal border: 111562
building height in classes:building height in classes:
building height (m) No. offrom to buildings
3 184423 4 438704 6 246726 8 177368 10 344210 20 269720 50 60250 92
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Distribution of Building HeightsDistribution of Building Heights
coast linecoast linemunicipal bordermunicipal border
legend:legend:
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Distribution of Building HeightsDistribution of Building Heights- San Juan town centre -- San Juan town centre -
coast linecoast linemunicipal bordermunicipal border
legend:legend:
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Input Data - Terrain ModelInput Data - Terrain Model
modifications due:modifications due:
- absolute heights corrected- absolute heights corrected
- arbitrary splines deleted- arbitrary splines deleted
- coast line at h=0 m was missing: - coast line at h=0 m was missing: coast line modelled from contour coast line modelled from contour line at 1 m height by a parallel line line at 1 m height by a parallel line at 5 m distanceat 5 m distance
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San Juan - Digital Town ModelSan Juan - Digital Town Modeltotal town area: 128 km²
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San Juan - 3D-ViewsSan Juan - 3D-Views
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San Juan - 3D-ViewsSan Juan - 3D-Views
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Calculation Standards/GuidelinesCalculation Standards/Guidelines
Road Noise: German Guideline RLS-90, edition 1990
RLS-90 calculates:
• 1st reflection order
• two outermost tracks separately
• no lateral diffraction
• no attenuation due to foliage
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CadnaA - Configurations of CalculationCadnaA - Configurations of Calculation
• 1st reflection order
• grid interpolation 9*9
• max. search radius for sources: 2500 m
• no projection of line & area sources
• ground absorption included (porous ground)
• evaluation parameters: Lday (6 am - 10 pm)Lnight (10 pm - 6 am)
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San Juan - Daytime GridSan Juan - Daytime Grid
SPL (dB(A)) subjected areafrom to day (km²)
50 23.350 55 26.755 60 28.960 65 20.965 70 11.370 75 6.475 8.3
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San Juan - Nighttime GridSan Juan - Nighttime Grid
SPL (dB(A)) subjected areafrom to night (km²)
50 64.650 55 25.555 60 1660 65 8.565 70 5.170 75 4.275 1.9
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San Juan - Comparison Day/Night GridsSan Juan - Comparison Day/Night Grids
Day Night
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San Juan - 3D-Views incl. GridSan Juan - 3D-Views incl. Grid
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San Juan - 3D-Views incl. GridSan Juan - 3D-Views incl. Grid